Results 21 to 30 of about 33,129 (274)

Green synthesis, characterization, and photocatalytic activity of cobalt chromite spinel nanoparticles

Materials Research Express, 2020
Eriochrome Black T, an azo dye, was degraded under visible light irradiation using CoCr2O4 nanoparticles as a photocatalyst. In this study, CoCr2O4 cubic-spinel nanoparticles were synthesized via a novel and green sol-gel method.
Saeid Taghavi Fardood, Reza Forootan, Farzaneh Moradnia, Z. Afshari, A. Ramazani   +4 more
semanticscholar   +1 more source

Geology, geochemistry and tectonic setting of Pan-African serpentinites of Um Salim-Um Salatit area, Central Eastern Desert, Egypt

Egyptian Journal of Remote Sensing and Space Sciences, 2012
This research aims at integrating remote sensing data and field studies for lithological mapping of different rock units. Geological interpretation of Landsat ETM+ image and field studies revealed that the study area is mainly covered by ophiolitic ...
A.K.A. Salem, A.E. Khalil, T.M. Ramadan
doaj   +1 more source

COMPOSITION OF SPINEL GROUP MINERALS FROM LATE PROTEROZOIC ULTRAMAFIC LAMPROPHYRES OF THE BOLSHETAGNINSKII ALKALINE ULTRAMAFIC CARBONATITE COMPLEX LOCATED AT THE URIK-IYA GRABEN, EASTERN SAYAN REGION

Геодинамика и тектонофизика, 2022
This paper provides the results on spinel sampled from ailikites of the Bolshetagninskii massif of the East Sayan region. The study aimed to determine the history of formation of ultramafic lamprophyres of the Ziminsky complex. Spinel from three dikes of
Ya. N. Nugumanova, A. G. Doroshkevich
doaj   +1 more source

Probing magnetic order in EELS of chromite spinels using both multiple scattering (FEFF8.2) and DFT (WIEN2k) [PDF]

, 2010
The electron energy loss near edge structure on the O K-edge from chromite spinels contains fine structure from the hybridisation of the O p-orbitals and the Cr d-orbitals.
A.J. Craven, Ankudinov, D.A. Eustace, D.W. McComb, Docherty, Egerton, Egerton, Ehrenberg, Eustace, Greedan, Hohenberg, Ishibashi, Keast, Klie, Kohn, Laskowski, Lee, Martinho, McComb, Muller, Müller, Pailloux, Pines, Schiessl, Schwarz, Scott, Shaked, Tomiyasu, Tomiyasu, Ueno, van Aken   +30 more
core   +1 more source

Effective Laboratory Method of Chromite Content Estimation in Reclaimed Sands

Archives of Foundry Engineering, 2016
The paper presents an original method of measuring the actual chromite content in the circulating moulding sand of foundry. This type of material is applied for production of moulds. This is the case of foundry which most frequently perform heavy casting
Ignaszak Z., Prunier J-B.
doaj   +1 more source

INVESTIGATION OF CHROMITE ORE BENEFICIATION POSSIBILITIES WITH DIFFERENT GRAVITY CONCENTRATORS

Rudarsko-geološko-naftni Zbornik, 2023
The rapid development of industry increases the demand and importance of chromium. In this study, beneficiation possibilities of the representative chromite ore taken from the Tokat Province with a laboratory type jig, spiral concentrator, shaking table ...
Ali Aras, Hasan Ali Taner
doaj   +1 more source

Characteristics of Chromite Deposits at North Kabaena District, Bombana Regency, Southeast Sulawesi Province, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2021
The study area is located in North Kabaena District, Bombana Regency, Southeast Sulawesi. This paper is aimed to describe characacristics of chromite deposits.
Hasria, Masri, Suryawan Asfar, Arisona, Ali Okto, La Ode Restele, La Ode Ngkoimani, Rika Yustika   +7 more
doaj   +1 more source

A geochemical study of the winonaites: Evidence for limited partial melting and constraints on the precursor composition [PDF]

, 2017
The winonaites are primitive achondrites which are associated with the IAB iron meteorites. Textural evidence implies heating to at least the Fe, Ni–FeS cotectic, but previous geochemical studies are ambiguous about the extent of silicate melting in ...
Benedix, Gretchen K., Bland, Philip A., Hammond, Samantha J., Hunt, Alison C., Kreissig, Katharina, Rehkämper, Mark, Strekopytov, Stanislav   +6 more
core   +2 more sources

The mineralogy, petrology, and composition of anomalous eucrite Emmaville [PDF]

, 2017
The Emmaville eucrite is a relatively poorly studied basaltic achondrite with an anomalous oxygen isotope signature. In this study, we report comprehensive mineralogical, petrographic, and geochemical data from Emmaville in order to understand its ...
Barrat, Barrat, Bland, Bogard, Bunch, Clayton, Cleverly, Eggins, Floss, Ghosh, Greenwood, Greenwood, Greenwood, Greenwood, Janots, Lodders, Mandler, Mason, Mayne, McSween, Metzler, Miller, Miller, Mittlefehldt, Mittlefehldt, Mittlefehldt, Morgan, Nyquist, Palme, Papike, Qin, Righter, Rogers, Scott, Spivak-Birndorf, Starkey, Stolper, Takeda, Takeda, Trinquier, Warren, Wasson, Weisberg, Wiechert, Yamaguchi, Yamaguchi, Yamaguchi, Yamaguchi   +47 more
core   +1 more source

Chromite chemistry of a massive chromitite seam in the northern limb of the Bushveld Igneous Complex, South Africa: correlation with the UG-2 in the eastern and western limbs and evidence of variable assimilation of footwall rocks

Mineralium Deposita, 2020
The Bushveld Igneous Complex (BIC) is known for its laterally extensive platinum group element–bearing layers, the most famous being the Merensky Reef and the UG-2 chromitite in the eastern and western limbs of the complex.
Malose M. Langa, P. Jugo, M. Leybourne, D. Grobler, J. Adetunji, H. Skogby   +5 more
semanticscholar   +1 more source